Hello,
You can use:
1. Broadcast something as following
If match.dl_type = packet.ARP :
match.src=Packet.src
match.dst=packet.dst
action = FLOOD
2. Set the ARP in each for each hosts using new version of mininet
check this post in mininet archive
https://mailman.stanford.edu/pipermail/mininet-discuss/2013-October/003258.html
3. Read MAC addresses from a file
http://pieknywidok.blogspot.com/2012/08/arp-and-ping-in-pox-building-pox-based.html?m=1
4. Learn ARP/MAC address
this how to learn MAC and can be used to respond to ARP if coupled with
previous code
http://lists.noxrepo.org/pipermail/pox-dev-noxrepo.org/2013-November/001190.html
I hope this is helpful
Thanks regards,
Amer
Sent from my iPhone
On ١٣/١١/٢٠١٣, at ١١:١٣ م, Muhammad Furqan Gagan <furqan.ga...@gmail.com>
wrote:
> After implementing my this ARP code in my controller I am recieving this
> error:
>
> ERROR:openflow.of_01:[00-00-00-00-00-03 4] OpenFlow Error:
> [00-00-00-00-00-03 4] Error: header:
> [00-00-00-00-00-03 4] Error: version: 1
> [00-00-00-00-00-03 4] Error: type: 1 (OFPT_ERROR)
> [00-00-00-00-00-03 4] Error: length: 76
> [00-00-00-00-00-03 4] Error: xid: 117
> [00-00-00-00-00-03 4] Error: type: OFPET_BAD_REQUEST (1)
> [00-00-00-00-00-03 4] Error: code: OFPBRC_BUFFER_EMPTY (7)
> [00-00-00-00-00-03 4] Error: datalen: 64
> [00-00-00-00-00-03 4] Error: 0000: 01 0e 00 58 00 00 00 75 00 00 00 00 00 03
> 00 00 ...X...u........
> [00-00-00-00-00-03 4] Error: 0010: 00 00 00 02 00 00 00 00 00 01 ff ff 00 00
> 08 06 ................
> [00-00-00-00-00-03 4] Error: 0020: 00 01 00 00 0a 00 00 02 0a 00 00 01 00 00
> 00 00 ................
> [00-00-00-00-00-03 4] Error: 0030: 00 00 00 00 00 00 00 00 00 00 00 0a 00 1e
> 80 00 …………….
>
> Any ideas how to overcome?
>
> Thanks
>
> Muhammad
>
> On Nov 13, 2013, at 1:03 PM, Muhammad Furqan Gagan <furqan.ga...@gmail.com>
> wrote:
>
>> I have implemented this code to handle ARP.. is it ok ? I am not sure about
>> that.. need your comments please
>>
>> a= packet.find('arp')
>> if a:
>> if a.prototype == arp.PROTO_TYPE_IP:
>> if a.hwtype == arp.HW_TYPE_ETHERNET:
>> if a.protosrc != 0:
>> if a.protosrc in arp_tale:
>> if a.hwsrc == True:
>> Mac = EthAddr(a.hwsrc)
>> arp_table[a.protosrc] = Mac:
>>
>>
>> if a.opcode == arp.REQUEST:
>> # Maybe we can answer
>>
>> if a.protodst in arp_table:
>> r = arp()
>> r.hwtype = a.hwtype
>> r.prototype = a.prototype
>> r.hwlen = a.hwlen
>> r.protolen = a.protolen
>> r.opcode = arp.REPLY
>> r.hwdst = a.hwsrc
>> r.protodst = a.protosrc
>> r.protosrc = a.protodst
>> Mac = arp_table[a.protodst]
>>
>> Mac = _dpid_to_mac(dpid)
>> r.hwsrc = Mac
>> e = ethernet(type=packet.type, src=_dpid_to_mac(dpid),
>> dst=a.hwsrc)
>> e.payload = r
>> log.info("%s answering ARP for %s" % (dpid_to_str(dpid),
>> str(r.protosrc)))
>> msg = of.ofp_packet_out()
>> msg.data = e.pack()
>> msg.actions.append(of.ofp_action_output(port =
>> of.OFPP_IN_PORT))
>> msg.in_port = inport
>> event.connection.send(msg)
>>
>> else:
>> msg = of.ofp_packet_out()
>> msg.actions.append(of.ofp_action_output(port =
>> of.OFPP_FLOOD))
>> msg.data = event.ofp
>> event.connection.send(msg.pack())
>>
>> Thanks
>>
>> Muhammad
>>
>> On Nov 13, 2013, at 12:56 PM, Murphy McCauley <murphy.mccau...@gmail.com>
>> wrote:
>>
>>> Durga is spot on, but I'll throw in another couple things you might look at:
>>> forwarding.l3_learning handles ARP
>>> proto.arp_helper attempts to make it easier to work with ARP
>>>
>>> (Oh, and misc.arp_responder has moved to proto.arp_responder in newer
>>> versions.)
>>>
>>> -- Murphy
>>>
>>> On Nov 13, 2013, at 2:06 AM, durga <c.vijaya.du...@gmail.com> wrote:
>>>
>>>>
>>>> hello,
>>>> Seems pox supports packet type as arp, can be found here (pox / pox / lib
>>>> / packet / arp.py ), as well as may be you can get some help by refering
>>>> to the below example.
>>>> pox / pox / misc / arp_responder.py
>>>>
>>>> Cheers!
>>>> Durga
>>>>
>>>>
>>>>
>>>> On Wed, Nov 13, 2013 at 8:35 PM, Muhammad Furqan Gagan
>>>> <furqan.ga...@gmail.com> wrote:
>>>>> Hello,
>>>>>
>>>>> Any one know how to handle ARP request in controller?
>>>>>
>>>>> Thanks
>>>>>
>>>>> Muhammad
>
